Mark B

"For US visitors, buy a local SIM to avoid roaming charges from AT&T and TMO-US provided you SIM unlocked your phone ahead of time. Oh and download maps to your phone if it supports it."

"If you're wearing Converse, remove your shoes at the checkpoint so it doesn't set off the metal detector unless you're going for a patdown."

"Have a CDM class here? Sit on the left side since for some odd reason there's 2 screens yet only one projector."

"Keep your ID on you at all times. It's the only way to do almost anything here."

"Stay on the right of the stairs when going/leaving the platform. Makes life easier."

"Farther you go into the building, the less chance you'll have a signal. At least from what I've seen."